Update openAlertDialog.md

Author: yogeshgupta698

powerapps-docs/developer/model-driven-apps/clientapi/reference/Xrm-Navigation/openAlertDialog.md

@@ -23,14 +23,16 @@ contributors:
 
 ## Parameters
 
+> [!Note]
+> With the [new look](../../../../../user/modern-fluent-design.md) enabled you can now let dialog's height auto resize. You can achieve this by not passing in a height value in the dialog options object. 
+
 |Name |Type |Required |Description |
 |---|---|---|---|
 |alertStrings|Object|Yes|The strings to be used in the alert dialog. The object contains the following values:<br/>- **confirmButtonLabel**: (Optional) String. The confirm button label. If you do not specify the button label, **OK** is used as the button label.<br/>- **text**: String. The message to be displayed in the alert dialog.<br/>- **title**: (Optional) String. The title of the alert dialog.|
-|alertOptions|Object|No|The height and width options for alert dialog. The object contains the following values:<br/>- **height**: (Optional) Number. Height of the alert dialog in pixels.<br/>- **width**: (Optional) Number. Width of the alert dialog pixels.|
+|alertOptions|Object|No|The height and width options for alert dialog. The object contains the following values:<br/>- **height**: (Optional) Number. Height of the alert dialog in pixels.<br/>- **width**: (Optional) Number. Width of the alert dialog pixels.<br><br> With [new look](../../../../../user/modern-fluent-design.md) enabled, height of the dialog with auto resize based on its content if no height is provided. |
 |successCallback|function|No|A function to execute when the alert dialog is closed by either clicking the confirm button or canceled by pressing ESC.|
 |errorCallback|function|No|A function to execute when the operation fails.|
 
-
 ## Example
 
 The following sample code displays an alert dialog. Clicking **Yes** button in the alert dialog or canceling the alert dialog by pressing ESC calls the `close` function::